DAO is on it's way out...if you're going to learn something, study ADO (unless you are working on systems that are already using DAO).

A good place to start (for just about anything) is MSDN. Try this portion of their site for an ADO tutorial.

Also on MSDN are partial books on line. Beginning Visual Basic 6 Database Programming gets you going on ADO (just click the down arrow at the top of the document to move to the next chapter as you read).

Good luck,

~seaweed